Segment and Geographic Information (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Total assets	$ 6,354	$ 6,850	[1]
United States [Member]
Total assets	5,677	6,229
Europe and Other [Member]
Total assets	645	583
Asia [Member]
Total assets	$ 32	$ 38

[1] Amounts derived from the audited financial statements for the year ended December 31, 2012.